Physical sciences topic list of research papers
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Detecting relic gravitational waves in the CMB: Comparison of Planck and ground-based experiments
Abstract We compare the detection abilities for the relic gravitational waves by two kinds of forthcoming cosmic microwave background radiation (CMB) experiments, space-based Planck satellite and the various ground-based experiments. Comparing with...
2009 / Wen Zhao, Wei Zhang -
High-energy reactions with microscopic wave functions
Abstract A new method is proposed to investigate high-energy reactions on heavy targets. It combines the eikonal model with a microscopic cluster description of the projectile. This approach is based on a nucleon–target interaction, and does not...
2010 / E.C. Pinilla, P. Descouvemont -
On a relation between Liouville field theory and a two component scalar field theory passing through the random walk
Abstract In this work it is proposed a transformation which is useful in order to simplify non-polynomial potentials given in the form of an exponential. As an application, it is shown that the quantum Liouville field theory may be mapped into a...
2008 / Franco Ferrari, Jarosław Paturej -
Jet quenching parameter in medium with chemical potential from AdS/CFT
Abstract We calculate the jet quenching parameter in medium with chemical potential from AdS/CFT correspondence. Our result is summarized in a plot. Moreover, we extract the explicit form of the jet quenching parameter of medium with small chemical...
2006 / Feng-Li Lin, Toshihiro Matsuo -
Particle dynamics and emergent gravity
Abstract The emergent gravity proposal is examined within the framework of non-commutative QED/gravity correspondence from particle dynamics point of view. In particular it is demonstrated how a non-commutative U(1) background gauge field can be...
2008 / Amir H. Fatollahi -
Double transverse-spin asymmetries in Drell–Yan processes with antiprotons
Abstract We present next-to-leading order predictions for double transverse-spin asymmetries in Drell–Yan dilepton production initiated by proton–antiproton scattering. The kinematic region of the proposed PAX experiment at GSI: ...
2006 / Vincenzo Barone, Alessandro Cafarella, Claudio Corianò, Marco Guzzi, Philip G. Ratcliffe -
Two-loop quark and gluon form factors in dimensional regularisation
Abstract We compute the two-loop corrections to the massless quark form factor γ ∗ → q ...
2005 / T. Gehrmann, T. Huber, D. Maître -
Loop diagrams in space with SU(2) fuzziness
Abstract The structure of loop corrections is examined in a scalar field theory on a three-dimensional space whose spatial coordinates are noncommutative and satisfy SU(2) Lie algebra. In particular, the 2- and 4-point functions in ...
2008 / Haniyeh Komaie-Moghaddam, Mohammad Khorrami, Amir H. Fatollahi -
Entropy bound of local quantum field theory with generalized uncertainty principle
Abstract We study the entropy bound for local quantum field theory (LQFT) with generalized uncertainty principle. The generalized uncertainty principle provides naturally a UV cutoff to the LQFT as gravity effects. Imposing the non-gravitational...
2009 / Yong-Wan Kim, Hyung Won Lee, Yun Soo Myung -
Constraints on the dark energy from the holographic connection to the small l CMB suppression
Abstract Using the recently obtained holographic cosmic duality, we reached a reasonable quantitative agreement between predictions of the cosmic microwave background radiation at small l and the WMAP observations, showing the power of the...
2005 / Jianyong Shen, Bin Wang, Elcio Abdalla, Ru-Keng Su -
Minicharges and magnetic monopoles
Abstract Minicharged particles arise naturally in extensions of the Standard Model with a kinetic mixing term between the ordinary electromagnetic U ( 1 ...
2009 / Felix Brümmer, Joerg Jaeckel -
Accelerating Universe with spacetime torsion but without dark matter and dark energy
Abstract It is shown that cosmological equations for homogeneous isotropic models deduced in the framework of the Poincaré gauge theory of gravity by certain restrictions on indefinite parameters of gravitational Lagrangian take at asymptotics the...
2009 / A.V. Minkevich -
Production of Θ+(1540) and Ξ pentaquark states in proton–proton interactions
Abstract The production of strange pentaquark states (e.g., Theta baryons and Ξ−− states) in hadronic interactions within a Gribov–Regge approach is explored. In this approach the Θ+(1540) and the Ξ are produced by disintegration of remnants formed...
2004 / M. Bleicher, F.M. Liu, J. Aichelin, T. Pierog, K. Werner -
The nucleon wave function at the origin
Abstract We calculate the next-to-leading order perturbative corrections to the SVZ sum rules for the coupling f N , the...
2011 / Michael Gruber -
W-pair production in unparticle physics
Abstract We consider the W-pair production for both e + e − ...
2008 / Swapan Majhi -
Helium-cluster decay widths of molecular states in beryllium and carbon isotopes
Abstract 4He (i.e., α particle) and 6He emissions from possible molecular states in beryllium and carbon isotopes have been investigated using a mean-field-type cluster potential. Calculations can reasonably describe the...
2007 / J.C. Pei, F.R. Xu -
Interacting cosmic fluids in power-law Friedmann–Robertson–Walker cosmological models
Abstract We provide a detailed description for power-law scaling Friedmann–Robertson–Walker cosmological scenarios dominated by two interacting perfect fluid components during the expansion. As a consequence of the mutual interaction between the two ...
2008 / Mauricio Cataldo, Patricio Mella, Paul Minning, Joel Saavedra -
Pole- versus MS-mass definitions in the electroweak theory
Abstract Two different two-loop relations between the pole- and the MS -mass of the top quark have been derived in the literature which were based on...
2004 / M. Faisst, J.H. Kühn, O. Veretin -
A new family of N-fold supersymmetry: type B
Abstract We construct a new family of N -fold supersymmetric systems which is referred to as “type B”. A higher-derivative representation of the N -fold...
2004 / Artemio González-López, Toshiaki Tanaka -
Twisted boundary conditions in lattice simulations
Abstract By imposing twisted boundary conditions on quark fields it is possible to access components of momenta other than integer multiples of 2 π / L ...
2005 / C.T. Sachrajda, G. Villadoro